{"cve":"CVE-2026-100350","nvd":{"published":"2026-10-15T16:17:30.793","modified":"2026-10-15T19:17:12.833","status":"Deferred","description":"kin-openapi is a Go project for handling OpenAPI files. From 0.145.0 until 0.146.0, openapi3filter repeatedly calls regexp.MustCompile for the same parameter-name regular expression inside the per-query-key loop in urlValuesDecoder.DecodeObject used to decode a deepObject query parameter. An unauthenticated remote client can send an affected endpoint a request containing many unrelated query keys, causing ValidateRequest to perform work and allocations proportional to the attacker-controlled key count for every deepObject parameter. The expression itself is fixed and this is not regular expression denial of service; the resource consumption comes from loop-invariant recompilation. This issue is fixed in version 0.146.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-400","CWE-770","CWE-1050"],"references":["https://github.com/getkin/kin-openapi/commit/d090e36b2f1c42c898ba2a687a8f6e25f5ca727f","https://github.com/getkin/kin-openapi/releases/tag/v0.146.0","https://github.com/getkin/kin-openapi/security/advisories/GHSA-h4r5-mxv5-8mjc","https://github.com/getkin/kin-openapi/security/advisories/GHSA-h4r5-mxv5-8mjc"],"products":[],"source":"nvd","synced_at":"2026-10-19T23:00:53.604569364+00:00"},"epss":{"cve":"CVE-2026-100350","score":0.00451,"percentile":0.38929,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-h4r5-mxv5-8mjc","url":"https://osv.dev/vulnerability/GHSA-h4r5-mxv5-8mjc","summary":"kin-openapi deepObject query decoding repeatedly compiles an invariant regular expression","modified":"2026-10-15T20:30:07.453128014Z","packages":[{"ecosystem":"Go","name":"github.com/getkin/kin-openapi","purl":"pkg:golang/github.com/getkin/kin-openapi","ranges":[">=0.145.0 <0.146.0"],"fixed":["0.146.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}